9900 Silicone Sealant, Neutral Cure Waterproof Adhesive for Kitchen, Bath, Window & Door, Weatherproof Exterior & Interior Caulk, 27 Ounce

HIGH-PERFORMANCE NEUTRAL CURE FORMULA: The 9900 High-Grade Silicone Sealant features a neutral-cure system that is non-corrosive and low-odor. It provides a professional-grade seal without the harsh vinegary smell of acetoxy silicones, making it ideal for both indoor and outdoor applications.

SUPERIOR WATERPROOF & WEATHER RESISTANCE: Engineered for maximum durability, this sealant creates a 100% waterproof barrier that resists extreme temperatures, UV rays, and heavy rain. It stays flexible without cracking or shrinking, ensuring long-term protection against leaks and moisture.

VERSATILE MULTI-SURFACE ADHESION: This industrial-strength adhesive bonds effectively to a wide range of building materials including glass, aluminum, metal, ceramic tile, stone, and treated wood. Perfect for sealing windows, doors, gutters, and siding

KITCHEN, BATH & ARCHITECTURAL USE: Designed for precision sealing in high-moisture areas. Whether you are sealing bathroom fixtures, kitchen backsplashes, or large-scale architectural glass projects, the 9900 formula provides a smooth, clean finish that resists yellowing.

EASY APPLICATION & FAST TACK-FREE TIME: Compatible with all standard caulking guns, this sealant applies smoothly and evenly. Its optimized formula offers a quick skin-over time, allowing you to complete your home improvement or construction projects efficiently.

Professional Grade Sealing for Every Project The 9900 High-Grade Neutral Silicone Sealant is the go-to solution for contractors and DIY enthusiasts who demand a long-lasting, weather-tight seal. Unlike standard acetoxy silicones that release harsh acidic fumes, our neutral-cure formula is virtually odorless and non-corrosive, making it safe for sensitive materials like metal, stone, and electronics. Built to Withstand the Elements Whether you are sealing a high-rise window or a kitchen backsplash, durability is key. This 9900 formula is engineered to handle extreme temperature fluctuations without losing its elastic properties. It provides excellent UV resistance, ensuring that your seals won’t yellow, crack, or become brittle even under direct sunlight or heavy rain. Versatility Across All Surfaces Stop worrying about whether your adhesive will stick. Our high-performance silicone is designed for superior adhesion to: Glazing & Glass: Ideal for structural glass and mirror installations. Metal & Aluminum: Perfect for window frames, gutters, and metal roofing. Masonry & Tile: Excellent for bathroom renovations and outdoor stone paths. Plastics & PVC: Great for modern siding and plumbing applications. Easy to Apply, Professional Results Designed for a smooth, buttery flow, the 9900 sealant is easy to extrude with any standard caulking gun. It offers a generous working time for tooling and smoothing, yet skins over quickly to protect your work from dust and debris. The result is a clean, aesthetic finish that enhances the look of your home or job site. Technical Specifications: Sealant Type: 9900 Neutral Cure Silicone Base: Silicone (Neutral) Application Temperature: 41°F to 104°F (5°C to 40°C) Cure Time: 24–48 hours (depending on thickness and humidity) Compliance: Professional Grade / Industrial Standard